An automatic blood mixing device

Abstract

The present invention discloses an automatic blood shaking device, belonging to the technical field of blood shaking equipment, which includes a number of movable structures capable of horizontal reciprocating movement. The cylinder assembly includes a pneumatic cylinder main body and a control unit. The end of the piston rod in the pneumatic cylinder main body is connected with a mounting seat. A ring seat unit with a sealing ring arranged on the outer peripheral surface of the piston rod is connected to the front end cover of the pneumatic cylinder main body. The ring seat unit is provided with a flexible outer cover unit which is elastic and covers the outside of the piston rod. When the ring seat unit in the cylinder assembly fails to seal due to repeated friction of the piston rod of the pneumatic cylinder main body, the gas inside the pneumatic cylinder main body will leak into the inside of the flexible outer cover unit through the ring seat unit. During the process that the flexible outer cover unit gradually expands elastically and drives the reset spring to change from the initial contracted state to the extended state through the synchronous rod, the control unit will be triggered to send the fault information of seal failure and the position information of the ring seat unit where the seal failure occurs to the outside at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of blood mixing equipment, and more specifically, to an automatic blood mixing device. Background Art

[0002] In medical units such as hospitals and disease control centers, in order to obtain accurate blood analysis test results, specific processing of human blood is required. For some specific test items, such as blood routine and biochemical analysis, usually after collecting human blood into a blood collection bag, an anticoagulant needs to be added to the bag and mixed evenly to prevent the blood from clotting in the bag.

[0003] Nowadays, industrial control systems are widely used in the medical field, covering many aspects, including medical imaging, medical testing, etc. At present, there are already some automatic blood mixing devices on the market, which use driving devices such as pneumatic cylinders to achieve automatic mixing and shaking of blood samples and anticoagulants, and can efficiently mix the blood and anticoagulants evenly.

[0004] As the existing automatic blood mixing device is used for a long time, the seal in the front end cover of the pneumatic cylinder is prone to wear under the repeated friction of the piston rod, resulting in poor sealing effect at the front end cover and gas leakage. And because the position where the gas leakage occurs is relatively hidden and difficult to directly observe, people cannot replace the worn seal in the pneumatic cylinder in time, resulting in continuous gas leakage when the mixing device mixes and shakes the blood sample and the anticoagulant. As a result, when the automatic blood mixing device mixes and shakes the blood sample and the anticoagulant through the pneumatic cylinder, phenomena such as weak pushing force or slow movement occur. This will not only affect the efficiency of blood mixing, but also easily make the blood sample and the anticoagulant not mixed evenly, affecting the reliability of subsequent blood analysis test results.

[0005] In view of this, we propose an automatic blood mixing device. Summary of the Invention

[0006] Technical Problem to be Solved: The purpose of the present invention is to provide an automatic blood mixing device to solve the technical problems raised in the above background art.

[0007] Technical solution: The technical solution of the present invention provides an automatic blood shaking device, which includes a number of movable structures that can reciprocate horizontally. Each movable structure is connected with a cylinder assembly that can drive it to reciprocate horizontally. The cylinder assembly includes a pneumatic cylinder main body and a control unit. The end of the piston rod in the pneumatic cylinder main body is connected with a mounting seat. A ring seat unit with a sealing ring provided on the outer peripheral surface of the piston rod is connected to the front end cover of the pneumatic cylinder main body. The ring seat unit is provided with a flexible outer cover unit that is elastic and covers the outside of the piston rod. The flexible outer cover unit is sealingly connected between the ring seat unit and the mounting seat. The front end cover of the pneumatic cylinder main body is also provided with a pressure sensing unit that is arranged around the outer peripheries of the ring seat unit and the flexible outer cover unit;

[0008] The pressure sensing unit includes an outer cover body. A synchronous rod is slidably inserted into the outer cover body, and one end of the synchronous rod extends into the inner part of the outer cover body. A reset elastic member that is elastic and can stretch and contract is connected between the synchronous rod and the outer cover body. A touch elastic sheet and a touch terminal that are electrically connected to the control unit are arranged inside the reset elastic member;

[0009] When the sealing of the ring seat unit fails, causing the gas inside the pneumatic cylinder main body to leak into the flexible outer cover unit through the ring seat unit, and during the process that the flexible outer cover unit gradually expands elastically and drives the reset elastic member to change from the initial contracted state to the extended state through the synchronous rod, the touch elastic sheet contacts the touch terminal, and the control unit is triggered to simultaneously send a fault message of sealing failure and the position information of the ring seat unit where the sealing failure occurs to the outside.

[0010] As an optional solution of the technical solution of the present invention document, the ring seat unit includes a plug rod airtight seat that is sealingly connected to the front end cover of the pneumatic cylinder main body. A sealing ring is arranged inside the plug rod airtight seat, and the sealing ring closely adheres to the outer peripheral surface of the piston rod in the pneumatic cylinder main body;

[0011] A plurality of side grooves arranged in a circular array are evenly provided on the inner cavity side wall of the pneumatic cylinder main body, and the side grooves are located on the side of the sealing ring away from the front end cover of the pneumatic cylinder main body;

[0012] A deviation correction sliding seat is sealingly slid in each side groove. One end of the deviation correction sliding seat is connected with a first spring, and the end of the first spring away from the deviation correction sliding seat is connected with the end of the side groove;

[0013] An annular air intake channel is also arranged inside the plug rod airtight seat, and all the side grooves are communicated with the annular air intake channel.

[0014] As an optional solution of the technical solution of the present invention document, the flexible outer cover unit includes a base cover part and a first cover shell. An elastic enclosure with elasticity is connected between the base cover part and the first cover shell;

[0015] The base cover part, the first cover shell and the elastic enclosure all cover the outside of the piston rod in the pneumatic cylinder main body, and the first cover shell is sealingly connected to the mounting seat.

[0016] As an alternative embodiment of the technical solution of the present invention document, the base cover member includes a second cover shell, and an air-gathering cover shell is fixedly communicated with the side wall of the second cover shell;

[0017] A one-way exhaust valve is connected to the side wall of the air-gathering cover shell;

[0018] A shunt pipeline is fixedly communicated with the end of the air-gathering cover shell;

[0019] A nozzle communicated with the annular intake passage is connected to the side wall of the plug rod airtight seat, and a one-way intake valve is provided on the nozzle;

[0020] The end of the shunt pipeline far from the air-gathering cover shell is connected to the nozzle;

[0021] The elastic enclosure is connected between the first cover shell and the second cover shell, and the end of the second cover shell far from the elastic enclosure is sealingly connected to the end of the plug rod airtight seat.

[0022] As an alternative embodiment of the technical solution of the present invention document, the synchronous rod member includes an L-shaped traction frame, a flexible cover body, and a single locking member that can limit the L-shaped traction frame to move in a single direction when the L-shaped traction frame is pushed by the elastically expanded flexible outer cover unit;

[0023] The L-shaped traction frame includes an insertion section and a connection section;

[0024] The insertion section of the L-shaped traction frame is slidably inserted into the side wall of the outer cover body;

[0025] One end of the insertion section extends into the inner cavity of the outer cover body and is connected to the flexible cover body, and the other end extends out of the side wall of the outer cover body and is connected to the connection section. The edge of the flexible cover body is connected to the inner cavity side wall of the outer cover body.

[0026] As an alternative embodiment of the technical solution of the present invention document, the single locking member includes a braking chuck, an adjustable sliding column, and a fixing frame. A chamfered portion is provided at the end of the braking chuck;

[0027] An adjusting screw is threadedly inserted into the fixing frame;

[0028] The adjustable sliding column and the braking chuck are arranged at an upper and lower interval, and a second spring is connected between the adjustable sliding column and the braking chuck;

[0029] The bottom end of the adjusting screw is rotatably connected to the end of the adjustable sliding column far from the braking chuck;

[0030] A straight groove is provided on the outer cover body corresponding to the position where the insertion section is slidably inserted, and both the braking chuck and the adjustable sliding column slide in the straight groove. The fixing frame is connected to the side wall of the outer cover body;

[0031] The chamfered portion in the braking chuck faces the inner cavity side of the outer cover body;

[0032] On the side of the insertion section facing the brake chuck, a plurality of limiting tooth grooves adapted to the chamfered portion are evenly provided. The cross-section of the limiting tooth groove is a right-angled triangle, and the chamfered portion is movably snapped into the limiting tooth groove.

[0033] As an alternative embodiment of the technical solution of the present invention document, the reset elastic member includes an insulating cylindrical shell. An insulating retracting rod is slidably inserted at the end of the insulating cylindrical shell, and one end of the insulating cylindrical shell away from the insulating retracting rod is connected to the side wall of the outer cover body;

[0034] One end of the insulating retracting rod extends into the inner cavity of the insulating cylindrical shell and is connected to a third spring, and the other end extends out of the end of the insulating cylindrical shell and is connected to a connecting seat, and the connecting seat is connected to the side wall of the insertion section of the L-shaped traction frame;

[0035] One end of the third spring away from the insulating retracting rod is connected to the end of the inner cavity of the insulating cylindrical shell;

[0036] The touch elastic sheet and the touch terminal are both located in the inner cavity of the insulating cylindrical shell, and the touch elastic sheet and the touch terminal are arranged opposite to each other;

[0037] The touch terminal is connected to the side wall of the inner cavity of the insulating cylindrical shell, and the outer surface of the touch terminal is flush with the side wall of the inner cavity of the insulating cylindrical shell;

[0038] The touch terminal is connected to the side wall of the insulating retracting rod.

[0039] As an alternative embodiment of the technical solution of the present invention document, the control unit includes a sub-controller connected to the front end cover of the pneumatic cylinder body. A signal transmitter is installed inside the sub-controller, and the pneumatic cylinder body is electrically connected to the sub-controller;

[0040] The touch elastic sheet and the touch terminal are both electrically connected to the signal transmitter, and when the touch elastic sheet contacts the touch terminal, the signal transmitter is triggered to simultaneously send the fault information of seal failure and the position information of the ring seat unit where the seal failure occurs to the outside.

[0041] As an alternative embodiment of the technical solution of the present invention document, an air port structure cooperating with the L-shaped traction frame is further provided at the air supply port of the front end cover of the pneumatic cylinder body;

[0042] The air port structure includes an external air hood connected to the air supply port of the front end cover of the pneumatic cylinder body;

[0043] An air guiding hose is fixedly communicated with the side wall of the external air hood;

[0044] An opening adjusting needle is hermetically and slidably inserted at the end of the external air hood;

[0045] A ring-shaped air blocking portion is provided on the side wall of the inner cavity of the external air hood;

[0046] One end of the connecting section of the L-shaped traction frame, which is far from the insertion section, is connected to the end of the opening adjustment needle.

[0047] When the opening adjustment needle is in the initial state, the spiked part in the opening adjustment needle passes through the annular air-blocking part.

[0048] The connection position of the air guide hose and the side wall of the external air hood is located on the side of the annular air-blocking part away from the front end cover of the pneumatic cylinder body.

[0049] As an alternative solution to the technical solution of the present invention document, the movable structure includes a mixing platform, and a plurality of rollers are evenly connected to the bottom of the mixing platform;

[0050] A placing rack is connected to the top of the mixing platform;

[0051] The mounting seat connected to the end of the piston rod in the pneumatic cylinder body is connected to the mixing platform.

[0052] Beneficial effects: One or more technical solutions provided in the technical solution of the present invention have at least the following technical effects or advantages: 1. Place the blood collection bags to be mixed on several movable structures respectively, and drive the movable structures to reciprocate horizontally through the cylinder assemblies connected to each movable structure, so that the present invention can shake a large number of blood collection bags at the same time, making the blood and anticoagulant in the bags mix evenly, improving the mixing efficiency of the blood to be tested. And in the above process, when the ring seat unit in the cylinder assembly fails to seal due to repeated friction of the piston rod of the pneumatic cylinder body, the gas inside the pneumatic cylinder body will leak into the flexible outer cover unit through the ring seat unit. During the process of the flexible outer cover unit gradually elastically expanding and driving the reset elastic member to change from the initial contracted state to the extended state through the synchronous rod, the touch elastic piece contacts the touch terminal, and the control unit is triggered to send the fault information of the seal failure and the position information of the ring seat unit where the seal failure occurs to the outside world at the same time, so that when the seal failure occurs and gas leakage is caused during the operation of the cylinder assembly, it can be discovered in time and the worn seal can be replaced in time, ensuring the blood mixing efficiency and also being beneficial to ensuring the reliability of the blood analysis and detection results.

[0053] 2. When the seal of the ring seat unit fails and the gas inside the pneumatic cylinder body continuously leaks through the ring seat unit into the flexible outer cover unit, causing the flexible outer cover unit to expand elastically, the leaked gas is first continuously injected into each side groove in the ring seat unit through the shunt pipeline in the base cover. As the gas in the side groove continuously increases, it drives the deviation-correcting sliding seat to continuously extend out of the side groove. Subsequently, the reciprocating piston rod in the pneumatic cylinder body is deviation-corrected and guided by multiple extended deviation-correcting sliding seats arranged in a circular array, avoiding the situation that the piston rod in the pneumatic cylinder body shakes or becomes unstable during movement due to the wear of the sealing ring in the ring seat unit by the reciprocating piston rod in the pneumatic cylinder body. Moreover, the extended deviation-correcting sliding seat can also effectively slow down the gas leakage speed, helping to maintain the stability of the air pressure in the cylinder assembly. Thus, when the cylinder assembly leaks, it can effectively improve the movement stability of the cylinder assembly, and further enhance the stability of blood mixing.

[0054] 3. During the process of continuously injecting leaked gas into the flexible outer cover unit and causing it to gradually expand elastically and continuously drive the reset spring to elongate through the synchronous rod, under the pushing action of the elastically expanding flexible outer cover unit, the synchronous rod will also drive the opening adjustment needle in the air port structure to move, causing the pointed part of the opening adjustment needle to gradually move towards the direction of the annular air-blocking part, increasing the distance between the annular air-blocking part and the pointed part of the opening adjustment needle, increasing the opening of the air port structure, and increasing the gas flow rate entering the cylinder assembly. This helps to compensate for the pressure drop in the cylinder assembly caused by leakage, further maintaining the air pressure stability inside the cylinder assembly, enhancing the anti-interference ability of the cylinder assembly in the case of gas leakage, enabling the cylinder assembly to continue operating without stopping when gas leakage occurs, and only needing to replace the sealing ring in the ring seat unit in time after the blood mixing work is completed, thus ensuring the blood mixing efficiency.

[0055] 4. When the flexible outer cover unit continuously reciprocates and expands and contracts under the drive of the piston rod of the pneumatic cylinder body, under the extrusion of the retracting piston rod, the air pressure inside the flexible outer cover unit continuously increases and exceeds the preset pressure of the one-way exhaust valve in the base cover. Then, pressure relief is carried out through the one-way exhaust valve to ensure that the air pressure inside the flexible outer cover unit is maintained within an appropriate range, preventing the elastic enclosure in the flexible outer cover unit from being burst.

[0056] When the flexible outer cover unit undergoes elastic expansion and drives the synchronous rod to slide, the brake chuck in the single lock continuously latches into different limit tooth grooves, and under the limiting action of the limit tooth grooves on the insertion section of the synchronous rod, the synchronous rod can only move in a single direction when the sealing of the ring seat unit fails, avoiding the situation where when the piston rod in the pneumatic cylinder body extends and pulls the elastic enclosure in the flexible outer cover unit, and when the elastic enclosure no longer tightly presses against the end of the insertion section of the synchronous rod, the synchronous rod runs back under the elastic pulling force of the reset spring, ensuring the stability of the opening degree of the air port structure. Description of the Drawings

[0057] Figure 1 Schematic diagram of the overall structure of the present invention.

[0058] Figure 2 For the present invention Figure 1 Partial enlarged schematic diagram of part A in the present invention.

[0059] Figure 3 Cross-sectional view of the outer cover body in the present invention.

[0060] Figure 4 For the present invention Figure 3 Partial enlarged schematic diagram of part B in the present invention.

[0061] Figure 5 Cross-sectional view of the port component in the present invention.

[0062] Figure 6 For the present invention Figure 5 Partial enlarged schematic diagram of part C in the present invention.

[0063] Figure 7 For the present invention Figure 5 Partial enlarged schematic diagram of part D in the present invention.

[0064] Figure 8 For the present invention Figure 5 Partial enlarged schematic diagram of part E in the present invention.

[0065] Figure 9 Schematic diagram of the structure of the flexible outer cover unit in the present invention.

[0066] Figure 10 For the present invention Figure 9 Partial enlarged schematic diagram of part F in the present invention.

[0067] Figure 11 Cross-sectional view of the plug rod airtight seat in the present invention.

[0068] Description of the reference numerals in the drawings:

[0069] 20, mixing and shaking platform;

[0070] 30, storage rack;

[0071] 401, pneumatic cylinder body; 402, outer cover body; 403, sub - controller; 404, adjustable sliding column; 405, adjusting screw; 406, insulating cylinder shell; 407, external air hood; 408, air guiding hose; 409, opening adjustment needle; 410, L - shaped traction frame; 411, braking chuck; 412, flexible cover body; 413, first cover shell; 414, second cover shell; 415, elastic enclosure; 416, deviation rectifying sliding seat; 417, annular air intake channel; 418, plug rod airtight seat; 419, insulating retracting rod; 420, touch elastic piece; 421, touch terminal; 422, annular air blocking part; 423, air gathering cover shell; 424, one - way exhaust valve; 425, shunt pipeline. Detailed implementation manners

[0072] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0073] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0074] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] Refer to Figure 1 , Figure 2 , Figure 5 and Figure 7, an embodiment of the present invention provides an automatic blood mixing device, which includes a number of movable structures that can reciprocate horizontally. Each movable structure is connected with a cylinder assembly that can drive it to reciprocate horizontally. The cylinder assembly includes a pneumatic cylinder main body 401 and a control unit. The end of the piston rod in the pneumatic cylinder main body 401 is connected with a mounting seat. A ring seat unit with a sealing ring provided on the outer peripheral surface of the piston rod is connected to the front end cover of the pneumatic cylinder main body 401. A flexible outer cover unit with elasticity and covering the outside of the piston rod is provided on the ring seat unit. The flexible outer cover unit is hermetically connected between the ring seat unit and the mounting seat. A pressure sensing unit surrounding the outer peripheries of the ring seat unit and the flexible outer cover unit is also provided on the front end cover of the pneumatic cylinder main body 401;

[0076] The pressure sensing unit includes an outer cover body 402. A synchronous rod is slidably inserted into the outer cover body 402, and one end of the synchronous rod extends into the interior of the outer cover body 402. An elastic and telescopic reset elastic member is connected between the synchronous rod and the outer cover body 402. A touch elastic sheet 420 and a touch terminal 421 electrically connected to the control unit are provided inside the reset elastic member;

[0077] When the sealing of the ring seat unit fails, causing the gas inside the pneumatic cylinder main body 401 to leak into the flexible outer cover unit through the ring seat unit, and during the process that the flexible outer cover unit gradually expands elastically and drives the reset elastic member to change from the initial contracted state to the extended state through the synchronous rod, the touch elastic sheet 420 contacts the touch terminal 421, and the control unit is triggered to send the fault information of the sealing failure and the position information of the ring seat unit where the sealing failure occurs to the outside world simultaneously.

[0078] Refer to Figure 1 , an embodiment of the present invention provides an automatic blood mixing device. The movable structure includes a mixing platform 20. A plurality of rollers are evenly connected to the bottom of the mixing platform 20;

[0079] A placing rack 30 is connected to the top of the mixing platform 20;

[0080] The mounting seat connected to the end of the piston rod in the pneumatic cylinder main body 401 is connected to the mixing platform 20.

[0081] The blood collection bags to be shaken are respectively placed on a number of movable structures, and the movable structures are driven to reciprocate horizontally by the cylinder assemblies connected to each movable structure, so that the present invention can shake a large number of blood collection bags at the same time, making the blood and anticoagulant in the bags mix evenly, improving the shaking efficiency of the blood to be tested. And in the above process, when the seal of the ring seat unit in the cylinder assembly fails due to repeated friction of the piston rod of the pneumatic cylinder body 401, the gas inside the pneumatic cylinder body 401 will leak into the flexible outer cover unit through the ring seat unit. During the process that the flexible outer cover unit gradually expands elastically and drives the reset spring to change from the initial contracted state to the extended state through the synchronous rod, the touch elastic piece 420 contacts the touch terminal 421, and the control unit is triggered to send the fault information of seal failure and the position information of the ring seat unit where the seal failure occurs to the outside at the same time, so that when the seal failure occurs and gas leakage is caused during the operation of the cylinder assembly, it can be discovered in time and the worn seal can be replaced in time, ensuring the blood shaking efficiency and also being beneficial to ensuring the reliability of the blood analysis and detection results.

[0082] Referring to Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figures 9 to 11 , an embodiment of the present invention provides a blood automatic shaking device. The ring seat unit includes a plug rod airtight seat 418 hermetically connected to the front end cover of the pneumatic cylinder body 401. A sealing ring is provided inside the plug rod airtight seat 418, and the sealing ring is closely attached to the outer peripheral surface of the piston rod in the pneumatic cylinder body 401;

[0083] A plurality of side grooves arranged in a circular array are evenly provided on the inner cavity side wall of the pneumatic cylinder body 401, and the side grooves are located on the side of the sealing ring away from the front end cover of the pneumatic cylinder body 401;

[0084] A deviation-correcting sliding seat 416 is hermetically slid in each side groove. One end of the deviation-correcting sliding seat 416 is connected with a first spring, and the end of the first spring away from the deviation-correcting sliding seat 416 is connected with the end of the side groove;

[0085] An annular air inlet channel 417 is further provided inside the plug rod airtight seat 418, and all the side grooves are communicated with the annular air inlet channel 417.

[0086] Referring to Figure 2 and Figure 3 , an embodiment of the present invention provides a blood automatic shaking device. The flexible outer cover unit includes a base cover part and a first cover shell 413. An elastic enclosure 415 with elasticity is connected between the base cover part and the first cover shell 413. The elastic enclosure 415 is made of an elastic rubber material;

[0087] The base cover, the first housing 413, and the elastic enclosure 415 are all disposed outside the piston rod in the pneumatic cylinder body 401, and the first housing 413 is sealingly connected to the mounting seat.

[0088] Referring to Figure 5 , Figure 6 , Figure 9 and Figure 10 , an embodiment of the present invention provides a blood automatic mixing device. The base cover includes a second housing 414, and a gas collecting housing 423 is fixedly communicated with the side wall of the second housing 414;

[0089] A one-way exhaust valve 424 is connected to the side wall of the gas collecting housing 423;

[0090] A shunt pipeline 425 is fixedly communicated with the end of the gas collecting housing 423;

[0091] A gas nozzle communicated with the annular intake passage 417 is connected to the side wall of the plug rod airtight seat 418, and a one-way intake valve is provided on the gas nozzle;

[0092] One end of the shunt pipeline 425 away from the gas collecting housing 423 is connected to the gas nozzle;

[0093] The elastic enclosure 415 is connected between the first housing 413 and the second housing 414, and one end of the second housing 414 away from the elastic enclosure 415 is sealingly connected to the end of the plug rod airtight seat 418.

[0094] When the seal of the ring seat unit fails, the gas inside the pneumatic cylinder body 401 continuously leaks into the flexible outer cover unit through the ring seat unit and causes the flexible outer cover unit to expand elastically. The leaked gas is continuously injected into the respective side grooves in the ring seat unit through the shunt pipeline 425 in the base cover. As the gas in the side grooves continuously increases, it drives the deviation correction slide seat 416 to continuously extend out of the side grooves. Subsequently, the reciprocating piston rod in the pneumatic cylinder body 401 is corrected and guided by a plurality of extended deviation correction slide seats 416 arranged in a circular array, avoiding the situation that the piston rod in the pneumatic cylinder body 401 shakes or becomes unstable when the piston rod reciprocates in the pneumatic cylinder body 401 after the sealing ring in the ring seat unit is worn by the reciprocating piston rod. Moreover, the extended deviation correction slide seat 416 can also effectively slow down the gas leakage speed, helping to maintain the stability of the air pressure in the cylinder assembly. Thus, when the cylinder assembly leaks, the movement stability of the cylinder assembly can be effectively improved, and further the stability of blood mixing can be enhanced.

[0095] When gas is continuously injected into the annular intake passage 417 in the ring seat unit through the shunt pipeline 425, the one-way intake valve on the gas nozzle controls the direction of the air flow, preventing the gas from flowing back after being injected into the annular intake passage 417 and thus affecting the stability of the air pressure inside the side grooves.

[0096] When the flexible outer cover unit continuously reciprocates and expands and contracts under the drive of the piston rod of the pneumatic cylinder body 401, when the internal air pressure of the flexible outer cover unit continuously increases and exceeds the preset pressure of the one-way exhaust valve 424 in the base cover under the extrusion of the retracted piston rod, pressure relief is carried out through the one-way exhaust valve 424 to ensure that the internal air pressure of the flexible outer cover unit is maintained within an appropriate range and prevent the elastic enclosure 415 in the flexible outer cover unit from bursting.

[0097] Refer to Figures 1 to 5 , an embodiment of the present invention provides a blood automatic mixing device. The synchronous rod member includes an L-shaped traction frame 410, a flexible cover body 412, and a single lock member that can limit the L-shaped traction frame 410 to move in a single direction when the L-shaped traction frame 410 is pushed by the elastically expanded flexible outer cover unit. The flexible cover body 412 is made of a flexible material;

[0098] The L-shaped traction frame 410 includes an insertion section and a connection section;

[0099] The insertion section of the L-shaped traction frame 410 is slidably inserted into the side wall of the outer cover body 402;

[0100] One end of the insertion section extends into the inner cavity of the outer cover body 402 and is connected to the flexible cover body 412, and the other end extends out of the side wall of the outer cover body 402 and is connected to the connection section. The edge of the flexible cover body 412 is connected to the inner cavity side wall of the outer cover body 402.

[0101] Refer to Figures 1 to 4 , an embodiment of the present invention provides a blood automatic mixing device. The single lock member includes a braking chuck 411, an adjustable sliding column 404, and a fixed frame. A chamfered portion is provided at the end of the braking chuck 411;

[0102] An adjusting screw 405 is threadedly inserted into the fixed frame;

[0103] The adjustable sliding column 404 and the braking chuck 411 are arranged at an upper and lower interval, and a second spring is connected between the adjustable sliding column 404 and the braking chuck 411;

[0104] The bottom end of the adjusting screw 405 is rotatably connected to the end of the adjustable sliding column 404 away from the braking chuck 411;

[0105] A straight groove is opened on the outer cover body 402 corresponding to the position where the insertion section is slidably inserted, and both the braking chuck 411 and the adjustable sliding column 404 slide in the straight groove. The fixed frame is connected to the side wall of the outer cover body 402;

[0106] The chamfered portion in the braking chuck 411 faces the inner cavity side of the outer cover body 402;

[0107] On one side of the insertion section facing the brake chuck 411, a plurality of limiting tooth grooves adapted to the chamfered portion are evenly provided. The cross-section of the limiting tooth groove is a right triangle, and the chamfered portion is movably buckled into the limiting tooth groove.

[0108] Referring to Figure 3 , Figure 5 and Figure 7 , an embodiment of the present invention provides a blood automatic mixing device. The reset elastic member includes an insulating cylinder shell 406. One end of the insulating cylinder shell 406 is slidably inserted with an insulating retractable rod 419, and one end of the insulating cylinder shell 406 away from the insulating retractable rod 419 is connected to the side wall of the outer cover 402;

[0109] One end of the insulating retractable rod 419 extends into the inner cavity of the insulating cylinder shell 406 and is connected with a third spring, and the other end extends out of the end of the insulating cylinder shell 406 and is connected with a connecting seat, and the connecting seat is connected to the side wall of the insertion section in the L-shaped traction frame 410;

[0110] One end of the third spring away from the insulating retractable rod 419 is connected to the end of the inner cavity of the insulating cylinder shell 406;

[0111] The touch elastic piece 420 and the touch terminal 421 are both located in the inner cavity of the insulating cylinder shell 406, and the touch elastic piece 420 and the touch terminal 421 are arranged opposite to each other;

[0112] The touch terminal 421 is connected to the side wall of the inner cavity of the insulating cylinder shell 406, and the outer surface of the touch terminal 421 is flush with the side wall of the inner cavity of the insulating cylinder shell 406;

[0113] The touch terminal 421 is connected to the side wall of the insulating retractable rod 419.

[0114] Referring to Figure 1 and Figure 2 , an embodiment of the present invention provides a blood automatic mixing device. The control unit includes a sub-controller 403 connected to the front end cover of the pneumatic cylinder body 401. A signal transmitter is installed inside the sub-controller 403, and the pneumatic cylinder body 401 is electrically connected to the sub-controller 403;

[0115] The touch elastic piece 420 and the touch terminal 421 are both electrically connected to the signal transmitter, and when the touch elastic piece 420 contacts the touch terminal 421, the signal transmitter is triggered to simultaneously send a fault message of seal failure and the position information of the ring seat unit where the seal failure occurs to the outside.

[0116] In the flexible outer cover unit, the elastic enclosure 415 undergoes elastic expansion, driving the synchronous rod inserted and slidably arranged on the side wall of the outer cover body 402 to slide. The sliding synchronous rod then drives the insulating retraction rod 419 in the reset elastic member to extend from the end of the insulating cylinder shell 406. During the process of the reset elastic member gradually changing from the initial contracted state to the extended state, the touch elastic sheet 420 contacts the touch terminal 421, triggering the signal transmitter in the control unit to turn on. Then, the turned-on signal transmitter simultaneously sends the fault information of the seal failure and the position information of the ring seat unit where the seal failure occurs to the external main controller. In the present invention, all the sub-controllers 403 are electrically connected to the external main controller, and the operator can send control signals to each sub-controller 403 through the external main controller. After receiving the control signal, the sub-controller 403 in the cylinder assembly sends it to the corresponding pneumatic cylinder body 401, enabling the operator to control each cylinder assembly through the external main controller. It should be noted that in this article, the external main controller is a common prior art such as a computer that plays a control role.

[0117] Referring to Figure 5 and Figure 8 , an embodiment of the present invention provides a blood automatic mixing device. An air port structure cooperating with the L-shaped traction frame 410 is further provided at the air supply port of the front end cover of the pneumatic cylinder body 401;

[0118] The air port structure includes an external air hood 407 connected to the air supply port of the front end cover of the pneumatic cylinder body 401;

[0119] An air guide hose 408 is fixedly communicated with the side wall of the external air hood 407;

[0120] An opening degree adjusting needle 409 is hermetically inserted and slidably arranged at the end of the external air hood 407;

[0121] A ring-shaped air blocking portion 422 is provided on the inner cavity side wall of the external air hood 407;

[0122] One end of the connecting section of the L-shaped traction frame 410 far from the inserting section is connected to the end of the opening degree adjusting needle 409;

[0123] When the opening degree adjusting needle 409 is in the initial state, the spike portion in the opening degree adjusting needle 409 passes through the ring-shaped air blocking portion 422;

[0124] The connection position of the air guide hose 408 and the side wall of the external air hood 407 is located on the side of the ring-shaped air blocking portion 422 far from the front end cover of the pneumatic cylinder body 401.

[0125] During the process of continuously injecting leakage gas into the flexible outer cover unit, gradually elastically expanding it, and continuously driving the reset spring to elongate through the synchronous rod, under the pushing action of the elastically expanding flexible outer cover unit, the synchronous rod will also drive the opening adjustment needle 409 in the air port structure to move, so that the pointed part in the opening adjustment needle 409 gradually moves towards the annular air blocking part 422, increasing the distance between the annular air blocking part 422 and the pointed part of the opening adjustment needle 409, increasing the opening of the air port structure, and increasing the gas flow rate entering the cylinder assembly. This helps to compensate for the pressure drop in the cylinder assembly due to leakage, further maintaining the air pressure stability inside the cylinder assembly, enhancing the anti-interference ability of the cylinder assembly in the event of gas leakage, enabling the cylinder assembly to continue operating without stopping when gas leakage occurs, and only needing to replace the sealing ring in the ring seat unit in a timely manner after the blood mixing operation is completed, thereby ensuring the blood mixing efficiency.

[0126] When the flexible outer cover unit elastically expands and drives the synchronous rod to slide, the braking chuck 411 in the single lock member continuously snaps into different limit tooth grooves, and under the limiting action of the limit tooth grooves on the insertion section of the synchronous rod, the synchronous rod can only move in a single direction when the ring seat unit has a sealing failure, preventing the piston rod in the pneumatic cylinder body 401 from pulling the elastic enclosure 415 in the flexible outer cover unit. When the elastic enclosure 415 no longer tightly presses against the end of the insertion section of the synchronous rod, the synchronous rod runs back under the elastic pulling force of the reset spring, ensuring the stability of the opening of the air port structure.

[0127] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic blood mixing device, characterized in that: The invention comprises a plurality of movable structures capable of horizontal reciprocating movement, each of the movable structures being connected to a cylinder assembly capable of driving the movable structure to perform horizontal reciprocating movement, the cylinder assembly comprising a pneumatic cylinder body (401) and a control unit, the end of a piston rod in the pneumatic cylinder body (401) being connected to a mounting seat, a front end cover of the pneumatic cylinder body (401) being connected to a ring seat unit with a sealing ring arranged on the outer peripheral surface of the piston rod, the ring seat unit being provided with a flexible outer cover unit having elasticity and arranged outside the piston rod, the flexible outer cover unit being sealedly connected between the ring seat unit and the mounting seat, and a pressure sensing unit being arranged around the outer periphery of the ring seat unit and the flexible outer cover unit being further provided on the front end cover of the pneumatic cylinder body (401); The pressure sensing unit comprises an outer cover (402), a synchronization rod is slidably inserted on the outer cover (402), and one end of the synchronization rod extends into the outer cover (402), a resilient and retractable resilient member is connected between the synchronization rod and the outer cover (402), and a touch spring (420) and a touch terminal (421) electrically connected to the control unit are arranged inside the resilient member; When the seal of the ring seat unit fails, the gas inside the pneumatic cylinder body (401) leaks through the ring seat unit into the flexible outer cover unit. The flexible outer cover unit gradually expands elastically and drives the reset spring member from an initial contracted state to an extended state through the synchronous rod, so that the touch spring piece (420) contacts the touch terminal (421), and triggers the control unit to simultaneously send seal failure fault information and position information of the ring seat unit where the seal failure occurs to the outside world; The ring seat unit comprises a plug rod airtight seat (418) which is sealed and connected to the front end cover of the pneumatic cylinder body (401); a sealing ring is arranged inside the plug rod airtight seat (418), and the sealing ring is tightly attached to the outer peripheral surface of the piston rod in the pneumatic cylinder body (401); A plurality of side grooves arranged in a circular array are evenly arranged on the inner cavity side wall of the pneumatic cylinder body (401), and the side grooves are located on the side of the sealing ring away from the front end cover of the pneumatic cylinder body (401); A deviation-correcting slide seat (416) is sealed and slidably disposed in each of the side grooves, an end of the deviation-correcting slide seat (416) is connected to a first spring, and an end of the first spring away from the deviation-correcting slide seat (416) is connected to the end of the side groove; An annular air inlet passage (417) is also provided inside the plug rod airtight seat (418), and all the side grooves are connected to the annular air inlet passage (417).

2. The automatic blood mixing device according to claim 1, characterized in that: The flexible outer cover unit comprises a base cover member and a first cover shell (413), and a specific elastic elastic enclosure (415) is connected between the base cover member and the first cover shell (413); The base cover, the first cover shell (413) and the elastic enclosure (415) are all arranged to cover the outside of the piston rod in the pneumatic cylinder body (401), and the first cover shell (413) is sealed and connected to the mounting seat.

3. The automatic blood mixing device according to claim 2, characterized in that: The base cover member comprises a second cover shell (414), and a gas collecting cover shell (423) is fixedly connected to the side wall of the second cover shell (414); A one-way exhaust valve (424) is connected to the side wall of the gas collecting housing (423); The end of the gas collecting housing (423) is fixedly connected to a flow distribution pipeline (425); The side wall of the plug rod airtight seat (418) is connected to a gas nozzle which is in communication with the annular air inlet passage (417), and a one-way air inlet valve is provided on the gas nozzle; One end of the flow distribution pipeline (425) away from the gas collecting housing (423) is connected to the gas nozzle; The elastic enclosure (415) is connected between the first cover shell (413) and the second cover shell (414), and one end of the second cover shell (414) away from the elastic enclosure (415) is sealed and connected to the end of the plug rod airtight seat (418).

4. The automatic blood mixing device according to claim 1, characterized in that: The synchronous rod comprises an L-shaped traction frame (410), a flexible cover body (412), and a single lock member capable of limiting the L-shaped traction frame (410) from moving in a single direction when the L-shaped traction frame (410) is pushed by an elastically expanded flexible outer cover unit; The L-shaped traction frame (410) comprises an insertion section and a connection section; The insertion section of the L-shaped traction frame (410) is slidably inserted on the side wall of the outer cover (402); One end of the insertion section extends into the inner cavity of the outer cover body (402) and is connected to the flexible cover body (412), and the other end extends from the side wall of the outer cover body (402) and is connected to the connecting section, and the edge of the flexible cover body (412) is connected to the inner cavity side wall of the outer cover body (402).

5. The automatic blood mixing device according to claim 4, characterized in that: The single locking member comprises a brake chuck (411), an adjustable sliding column (404) and a fixing frame, and a chamfered portion is provided on the end of the brake chuck (411); An adjusting screw (405) is threadedly inserted on the fixing frame; The adjustable sliding column (404) and the brake clamp (411) are arranged with an upper and lower interval, and a second spring is connected between the adjustable sliding column (404) and the brake clamp (411); The bottom end of the adjusting screw rod (405) is rotatably connected to an end of the adjustable sliding column (404) away from the brake clamp (411); A straight groove is provided on the outer cover (402) at a position corresponding to the sliding insertion position of the insertion section, and the brake chuck (411) and the adjustable slide column (404) both slide in the straight groove, and the fixing frame is connected to the side wall of the outer cover (402); The chamfered portion of the brake chuck (411) faces one side of the inner cavity of the outer cover (402); A plurality of position-limiting tooth grooves matching the chamfered portion are evenly arranged on one side of the insertion section facing the brake clamp (411); the cross section of the position-limiting tooth groove is a right-angled triangle, and the chamfered portion is movably buckled into the interior of the position-limiting tooth groove.

6. The automatic blood mixing device according to claim 4, characterized in that: The resetting spring comprises an insulating cylindrical shell (406), an insulating retracting rod (419) is slidably inserted into the end of the insulating cylindrical shell (406), and one end of the insulating cylindrical shell (406) away from the insulating retracting rod (419) is connected to the side wall of the outer cover (402); One end of the insulating retracting rod (419) extends into the inner cavity of the insulating cylindrical shell (406) and is connected to a third spring, and the other end extends from the end of the insulating cylindrical shell (406) and is connected to a connecting seat, and the connecting seat is connected to the side wall of the inserting section in the L-shaped traction frame (410); One end of the third spring away from the insulating retracting rod (419) is connected to the inner cavity end of the insulating cylindrical shell (406); The touch spring (420) and the touch terminal (421) are both located in the inner cavity of the insulating cylindrical shell (406), and the touch spring (420) and the touch terminal (421) are arranged opposite to each other; The touch terminal (421) is connected to the inner cavity side wall of the insulating cylindrical shell (406), and the outer surface of the touch terminal (421) is flush with the inner cavity side wall of the insulating cylindrical shell (406); The touch terminal (421) is connected to the side wall of the insulating retracted rod (419).

7. The automatic blood mixing device according to claim 6, characterized in that: The control unit comprises a sub-controller (403) connected to the front end cover of the pneumatic cylinder body (401), a signal transmitter is installed inside the sub-controller (403), and the pneumatic cylinder body (401) is electrically connected to the sub-controller (403); The touch spring (420) and the touch terminal (421) are both electrically connected to the signal transmitter, and when the touch spring (420) and the touch terminal (421) are in contact, the signal transmitter is triggered to simultaneously send sealing failure fault information and position information of the ring seat unit where the sealing failure fault occurs to the outside world.

8. The automatic blood mixing device according to claim 4, characterized in that: The air supply port of the front end cover of the pneumatic cylinder body (401) is also provided with an air port structure that cooperates with the L-shaped traction frame (410); The air port structure comprises an external air cover (407) connected to the air supply port of the front end cover of the pneumatic cylinder body (401); The side wall of the external air cover (407) is fixedly connected to an air bleed hose (408); An opening adjustment needle (409) is inserted and sealed and slidably inserted at the end of the external air cover (407); A ring-shaped air blocking portion (422) is provided on the inner cavity side wall of the external air cover (407); One end of the connecting section in the L-shaped traction frame (410) away from the insertion section is connected to the end of the opening adjustment needle (409); When the opening adjustment needle (409) is in an initial state, the spike portion in the opening adjustment needle (409) passes through the annular air blocking portion (422); The connection position between the air bleed hose (408) and the side wall of the external air cover (407) is located on the side of the annular air blocking portion (422) away from the front end cover of the pneumatic cylinder body (401).

9. The automatic blood mixing device according to claim 1, characterized in that: The movable structure comprises a mixing and shaking platform (20), and a plurality of rollers are evenly connected to the bottom of the mixing and shaking platform (20); The top of the mixing platform (20) is connected to a shelf (30); The mounting seat connected to the end of the piston rod in the pneumatic cylinder body (401) is connected to the mixing platform (20).

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